Book-index.



No. 78,869. v Patented my. I8, 1902-.

J. T GALE.

- BOOK INDEX. (Abplicathfi filed Jan. 22, 1900.)

(.No Model.

WITNESSES IN VENTOI? THE uonnps PzYERs co, Pnoroumm wasnmm'on. u. c,

Warren firarns Parent OFFICE.

JOHN T. GALE, OF COLUMBUS, OHIO.

Book-annex.

SPECIFICATION forming part of Letters Patent N 0. 713,869, datedNovember 18, 1902.

Application filed January 22,1900. Serial No. 2,243. (No model.)

To all whont it may concern:

Be it known that I, JOHN T. GALE, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented a certain new and useful Improvement in Book-Indexes, of whichthe following is a specification.

My invention relates to the improvement of book-indexes; and the objectsof my invention are to provide an improved index for books such as areordinarily employed for keeping records or accounts of various kinds, toso construct the same as to admit of the index being displayed in aconvenient position for use and without utilizing additional leaves orspace on the leaves of the book or record, and to produce otherimprovements the details of which will be more fully pointed outhereinafter. These objects I accomplish in the manner illustrated in theaccompanying drawings, in which- Figure 1 is an inner face view of aportion of a book-cover having my improvement thereon, showing forconvenience in illustration a portion of the index-retaining stripbroken away; and Fig. 2 is a tranverse section of the outer edge portionof a book having my improvement, showing the index in its innerposition.

Similar reference-numerals refer to similar parts throughout the severalviews.

In carrying out my invention I construct the inner face of one or bothcovers 1 of a book 2 with a depression such as is indicated at 3, thisdepression extending lengthwise between points near the ends of thebook-cover and extending from the outer edge of said cover a desirabledistance inward. Bridging the depression 3 longitudinally is anindex-retaining bar or strip 4, the latter being adjacent to andparallel with the outer edge of the cover 1. Beneath this bridge or stopbar is adapted to be made to slide in the depression 3 an indexplate 5,the latter being formed of suitable material to impart the desiredrigidity thereto and having its inner longitudinal edge provided with anupturned shoulder or flange 6, which limits the outward movement of saidindex-plate by contact with the inner edge of the bridge-bar 4. Upon theface of the index-plate 5 1 cause to be printed, stamped, or otherwisemade to appear index-letters, groups of letters and figures, or otherdesired references to accounts and pages of the book, this printedmatter being arranged on the outer portion of the index-plate, so thatwhen the latter is turned to its outer position the matter thereon willbe disclosed to view on the outer side of the bridge-bar. As shown inthe drawing, however, I preferably produce this printed matter induplicate, the same matter appearing on the inner half of theindex-plate as that shown on the outer half, so that the inner columnsmay be read on the inner side of the bridge-bar when the index-plate isnot drawn outward. It is obvious, however, that when the leaves of thebook or that portion thereof are resting upon the cover and bridgebarthe index-plate may be drawn outward in the manner shown in Fig. l andthe matter thereon easily read Without lifting the pages from the coverof the book.

From the construction which I have sh own and described it will be seenthat a simple and extremely convenient index attachment is provided forbook-covers, which will obviate the necessity of employing pages orportions of the pages of the book for index matter. It is obvious thatthe construction above described may be employed in both the back andfront boards or cover-leaves of the bOOk-OtSIllg, if desired.

Having now fully described myinvention, what I claim, and desire tosecure by Letters Patent, is-

In an index for books, the combination with a bookcover having adepression 3 leading through the outer edge of said cover and on theinner face thereof and a fixed bar 4 bridging said depressionlongitudinally, of an index-plate 5 having corresponding or duplicateindex matter printed on its inner and outer portions, said index-plateadapted to fit and slide within said depression and beneath saidbridge-bar and having an inner edge shoulder adapted to abut againstsaid bridge-bar when said plate is pulled outward, substantially asspecified.

JOHN T. GALE.

In presence of O. (J. SHEPHERD, A. L. PHELPS.

